Oracle’s Enterprise Manager is an on-premises monitoring and management tool. The console is designed primarily to manage other Oracle products, it but can integrate to manage non-Oracle components as well.
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Zabbix
Score 8.7 out of 10
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Zabbix is an open-source network performance monitoring software. It includes prebuilt official and community-developed templates for integrating with networks, applications, and endpoints, and can automate some monitoring processes.
I wish I had an option to give it a 9.5 :) OEM Cloud Control is very well suited if you have a system with multiple implementations of Oracle Database Enterprise Edition. If you are willing to pay for the huge license cost which is typical with Oracle, then you will love to use OEM Cloud Control to monitor your entire ERP solution including web servers, applications, network, storage, and physical servers. It is not worth the buck if your's is a small implementation. Your DBA's should be able to work without depending on OEM Cloud Control.
Because we spread out in different locations, we can't always know the status of our devices. Zabbix solves this issue for us. As soon as we see an alert that the remote site is down, we can solve it right away. I can't think of a scenario where it was less appropriate for us.
Oracle Enterprise Manager is a "one stop shop" for all of our management needs. This is helpful because it minimizes the management of the management software itself. There are less upgrades and connectivity issues to handle. And there are "plug-ins" for additional products we use like Blue Medora's one for PostgreSQL.
Managing administrative jobs can be burdensome in a shop with dozens of servers and databases. OEM Cloud Control makes it easy since you can view all the jobs for all servers in one place. It is easy to filter on jobs with problems or the like so that you can quickly look at the logs and fix the issues.
Tuning PL/SQL is much easier using OEM Cloud Control. Most DBAs are familiar with trace files and TKPROF, but not having to do those things at a command line smooths the process out. The graphical interface makes it easier to show developers exactly what the issues are. This makes for less finger-pointing and quicker resolution of performance problems.
Proactive management is easier using OEM Cloud Control. Before having the gui, I had a collection of scripts that I would have to install on each database server, then set up cron jobs to run them. When Oracle was upgraded, those scripts might have to be updated on each and every server. OEM Cloud Control has those things built in. You can choose exactly which metrics are important to you. And you can keep performance graphs up all day on a second monitor to let you instantly see when something might cause a problem.
Alerts; Zabbix allows deep customization of conditions and alerts giving you the ability to perform nearly any scripted action in a variety of scenarios
Inventory; having one place to see a list of all on-going problems and list of servers within your organization is critical
Graphs; screens or graphs showing customizable and color-coded historical usage is a necessity in any monitoring software
We also use OEM to monitor SQL Server. However, OEM only provided limited features for SQL Server. It would be nice if we can schedule backup jobs for SQL Server in OEM.
The ability to run SQL queries. You can't run queries in OEM. I have to go to SQL Developer or SQL PLUS to run. queries.
It is free. It didn't cost anything to implement (other than my time and the cost incurred for it) and it is filling a badly needed gap in our IT infrastructure. Support is available if we have issues and can be done annually or paid for on a per incident basis as needed. Expansion, updates, and all other future lifecycle activities are likewise free of cost, so as long as someone is able to implement/maintain the software (and the OSS project is maintained) then I imagine the company will never leave it.
It's great! It does everything and anything you would want it to do. It can monitor things which doesn't comes out of the box by adding plug ins to it, for example, you can even monitor Oracle GoldenGate Replication by adding a plug-in to OEM Cloud Control.
Well i find the tool quite useful for my daily network monitoring purpose. We get the alerts easily through SMS which saves us lot of our times and effort. The tool is highly customizable which i mentioned earlier which helps to create different alert criteria for different device or system.
I still rate OEM as a must-have tool for central management of Oracle fleet. The pros and cons of the product is prominent. Meanwhile, I also acknowledge that OEM was design about a decade ago. At that time, it did not have the landscape we have today, such as cloud, DEVOPS, machine learning, etc. I hope in future releases, the design will incorporate those features.
The setup is the most time-consuming portion of using zabbix. It takes a lot of effort to shape it into a usable format and even then it can get very messy. It's not exactly intuitive and as mentioned the UI seems a bit antiquated. If I was to roll out a monitoring solution from scratch, I'd probably look for alternatives which are easier to use and maintain.
We are a mainly Windows environment, so it would be useful if we could have used Active Directory to deploy agents. As of version 4.2, Zabbix has announced a new agent MSI file to allow exactly that. Unfortunately, we didn't have that option. Also, for Linux and MAC deployments, there is no simple way to deploy that. Using remote scripts you may be able to create something, but most places will opt for either SNMP (agentless) or manual installation of agents to add to Zabbix. A way of deploying agents via discovery would go a long way to helping in the adoption of the tool.
Kibana from Elastic is another monitoring tool that claims to provide very similar information to OEM. It seems to be an information tool rather than a tool that can actually make changes within a database. I think Kibana is more robust for hardware versus database software so it is more suited to that purpose and does to compare to the Oracle Database monitoring attributes of OEM.
The software's I mentioned are great, but they are overpriced comparing to Zabbix while it's a free open-source application. The value its adding has high price than any other free open-source apps. the monitoring and alerts details and the friendly user interface is stacking up against any other apps in the web.
Positive: Alerting features. Without this we would have to be a 24x7 shop with someone always manning the helm. With the alerting feature we can define levels of alerts and only get the most pressing alerts sent out.
ROI: OEM is free, so the ROI is whatever you make of it.
Zabbix has had a positive impact on uptime of our external facing website. Users don't always call up our Customer Service team to report that something is down - sometimes they just abandon the website all together. By having a monitoring solution that tells us when things are down before customers do, we are able to respond quickly and avoid losing visitors and ultimately sales.
